Overview
Taxonomy
The Class Filicopsida is further organized into finer groupings including:
- Order (5): Cladoxylales · Coenopteridales · Filicales · Polypodiales · Salviniales
- Species: ZipcodeZoo has pages for 1,752 species, subspecies, varieties, forms, and cultivars in the Class Filicopsida.
Orders
Cladoxylales
Coenopteridales
Filicales
The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. The characteristics of this group include: sporangia with a vertical interrupted by the stalk and stomium; indusia laterally or centrally attached (or lost); gametophytes green, chordate, and surficial . [more]
Polypodiales
The order Polypodiales encompasses the major lineages of polypod ferns, which comprise more than 80% of today's fern species. They are found in many parts of the world including tropical, semitropical and temperate areas. The characteristics of this group include: sporangia with a vertical interrupted by the stalk and stomium; indusia laterally or centrally attached (or lost); gametophytes green, chordate, and surficial . [more]
Salviniales
The order Salviniales (formerly known as the Hydropteridales and including the former Marsileales) is an order of ferns in the Division Pteridophyta. They are all aquatic and differ from all other ferns in being heterosporous, meaning that they produce two different types of spores (megaspores and microspores) that develop into two different types of gametophytes (female and male gametophytes, respectively), and in that their gametophytes are endosporic, meaning that they never grow outside the spore wall and cannot become larger than the spores that produced them. In being heterosporus with endosporic gametophytes they are more similar to seed plants than to other ferns. [more]
At least 311 species and subspecies belong to the Order Salviniales.
More info about the Order Salviniales may be found here.
Sources
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